Late winter–spring, only with a suitable early cultivarSow directly into the final greenhouse soil or deep container; do not transplant later.
- Germination and temperature
- Wait for workable, warmed soil; follow the cultivar’s minimum sowing temperature.
- After emergence
- Keep the seed row evenly moist during emergence and identifiable with a label.
- Pricking out and potting on
- Do not prick out. Thin in place; transplanting can damage the taproot.
- Hardening off and planting out
- Stays where sown; hardening off and planting out are unnecessary for direct sowing.
Use deep soil with little compaction. A warm tray in the loft is not a suitable propagation route for this root crop.
Sources and use
Royal Horticultural Society · RHS — wortel kweken ↗Soort- of productgebonden bron; buitenlandse perioden zijn geen vaste Nederlandse zaaidatum.
University of Minnesota Extension · UMN Extension — wortel in de moestuin ↗Soort- of productgebonden bron; buitenlandse perioden zijn geen vaste Nederlandse zaaidatum.
Guideline periods for the Netherlands and Flanders. Check the variety, available light, soil and measured temperatures. Greenhouse heating does not guarantee enough winter light.